摘要
应用能值分析方法评估四川省五大经济区农业生态系统的发展趋势及可持续性。2000—2012年,四川省农业生态系统产值不断增加,而产值的增加主要依靠工业辅助能的大量投入,从而导致农业生态系统环境承载力和可持续发展能力减弱;五大经济区农业生态系统发展状况差异较大,成都、川南、攀西以及川西北经济区农业生态系统可持续性发展能力较弱,川东北经济区农业生态系统富有活力和发展潜力。在能值分析基础上,运用柯布-道格拉斯生产函数,探讨了四川省五大经济区农业生态系统中相关生产要素对农业生态系统产出能值的影响。五大经济区农业生态系统能值产出受各生产要素的影响不同,成都、川南经济区受水资源能值投入的影响最大,川东北、攀西以及川西北经济区受劳动力能值投入影响最大。
In this paper, emergy theory was applied to the quantitatively assessment of the agriculture ecosystems in five economic zones in Sichuan Province during 2000-2012. The results indicates that agricultural ecological system output was growing in 2000-2012, but increase industrial output value mainly depended on a large number of economic emergy input, caused the environmental carrying capacity and the sustainability of the system weakened gradually. The development status of the agriculture ecosystems in Sichuan Province varied among regions. The sustainability of agriculture ecosystems in Chengdu economic zone, Southern economic zone, Panxi economic zone and Northwest economic zone were weak, while Northeast economic zone was full of vitality and development potential, and based on the analysis of the emergy, utilized the Cobb-Douglas production function to investigate the influence of related production factors of agricultural ecosystem on output emergy. According to the elastic coefficients to the model, the output emergy of the agriculture ecosystems in five economic zones were affected differently, water resources emergy investment is the biggest factor in Chengdu economic zone, Southern economic zone, and the labor emergy investment is biggest factor in Northwest economic zone , Panxi economic and Northeast economic zone.
出处
《地域研究与开发》
CSSCI
北大核心
2015年第5期128-132,166,共6页
Areal Research and Development
基金
四川省软科学计划项目(2015ZR0121)
四川省国土资源厅科研项目(Y5D2180180)
关键词
农业生态系统
能值
可持续性
生产函数
四川省
agriculture ecosystem
emergy
sustainability
production function
Sichuan Province
